I’ve seen this mentioned on Reddit. Specially from PC player. They use this to manipulate the color on your display to adjust to time of day and lighting available.
f.lux is available free for PC, Mac, Linux, iPhone and Android (root required).
I use it on my PC, I like it - not entirely sure if it helps though I can see the difference if it is off.
I use something similar on my Android phone too, think its called Twilight.
Both can be set to specific times or just daylight times which works perfectly for me.